port forwarding for Voip

[talmid chuchem]

i setup 6 phones for a camp using localphone as the outbound call provider with a subscription of 5000 for each line (each line has a separate localphone account), all lines had only one way audio. i know the way to fix it is via port forwarding etc, but as i don;t know what to do, i just disabled the firewall. anyone has a good guide to port forwarding or maybe can help me out?

[pcgeek]

i setup 6 phones for a camp using localphone as the outbound call provider with a subscription of 5000 for each line (each line has a separate localphone account), all lines had only one way audio. i know the way to fix it is via port forwarding etc, but as i don;t know what to do, i just disabled the firewall. anyone has a good guide to port forwarding or maybe can help me out?

There are lots of port forwarding guides on the internet. Here is one for example https://www.noip.com/support/knowledgebase/general-port-forwarding-guide/
You should turn your firewall back on ASAP as it's very bad for security to have it off and you are leaving yourself vulnerable.

[Hamagid]

Try turning off sip alg

[Yisroel Tech]

You should not need Port Forwarding for VoIP calls to work properly, and if something it makes you much more vulnerable.

As Hamagid mentions, turning Off SIP ALG in your router might help.

[talmid chuchem]

Thanks all for your help.
i finally found SIP ALG, its called SIP passthrough in this router, i disable it & i also forwarded the ports, & it seems to work fine #TYH